Improvement in rolling shutters



\ J. a. WILSON.

ROLLING SHUTTERS. Nd.184,944. Pate'nted N -W ZS, 1876.

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NEED "grams FATENT QFFIIGE.

" JAMES c. WILSON, on NEW YORK, N. Y.

IMPROVEMENT m ROLLING SHUTTERS.

Specification forming part of Letters Patent N0. 1 84,944, dated November 28, 1876; application filed July 22, 1876.

To all whom it may concern:

Be it known that I, JAMES G. WILSON, of the city, county, and State of New York, have invented a new and useful Improvement in Rolling Shutters, which improvement is fully set forth in the following specification, refer ence being had to the accompanying drawing,

in which- Figure l is a vertical section of my improvement. Fig. 2 is a front view of a portion of a shutter provided along its edge with a steel spring or other metal band according to my invention.

Similarletters indicate corresponding parts.

My invention, consists in the combination, with a corrugated shutter composed of a continuous sheet of corrugated metal, of metallic bands extending length wise along the shutter,

the shutters or the bands beingprovided with slots and fastened together by means of rivets, so as to allow a slight play of the shutter on the bands, to enable the whole to be wound upon a roller, as more fully hereinafter set against each other or interlocking when the shutter is wound up or unwound; and they enable the shutter to be operated smoothly and with veryvlittle noise.

My invention consists, further, in a relieving, anti-friction-toothed roller, one or more, combined with a'corrugated shutter in such a manner that the corrugations engage with the,

teeth of the rollers, and the shutter is thereby kept true and preserved from torsion, and is operated with regularity and uniformity across its whole width.

The letter A designates a corrugated-metal spring-bands.

shutter, composed of a continuous sheet 'of corrugated metal; and B is a'shaft, on which it is wound up. Upon the surface of the shutter (one or both surfaces, as may be preferred by the 'ma-nufacturer) I fasten metallic spring-bands 0, arranged lengthwise of the shutter, in contact with 'its' corrugations, and fastenedthereto by rivets D or other suitable means. The metallic bands 0 are thin and elastic, so that they will conform to the curve taken by the shutter when wound upon the shaft B, and will resume their shape when the shutter is unwound. The rivet-holes for the rivets D are slightly elongated, either in the spring-bands O or in the shutter, so as to allow a little play of the spring-band on the shutter when the shutter is being wound up.'

These elongations are made lengthwise of the The letter O designates the elongated rivet-holes.

I have in this example shown a band, 0, consisting of a strip of spring-steel fastened along the edge of the shutter; but I do not restrict my invention to its location along the edges of the shutter, as it may also be placed along the shutter between its edges; but

when placed along the edges the bands preserve the shutter more or less from wear against the sides of the guiding-grooves E, in which the edges of the shutter are usually arranged to run.

In order to relieve the shutter of friction asmuch as possible at the place where it passes into its guides, and to cause it to move true across its whole width, no matter what may be its'width, I place toothed rollers F along the line where the shutter leaves the inclosingcase G, or where'it enters the guides E, so

that the corrugations H of the shutter will engage the teethof the rollers as the shutter passes down or up, and thus be relieved to some extent from resistance by friction, and be guided evenly and truly across its whole width. The rollers F turn loosely on-their journals, and their teeth or' cogs are made to fit in the corrugations of the'shutter. The shutter is guided by the rollers in its proper course into and out of the guides E, and is relieved and supported along the line where the rollers are arranged; and the rollers have the efiect to prevent the jolting of the shut- 2. The combination, with a corrugated shutter when it is operated, and cause it to run ter, of loose toothed rollers F, arranged and smoothly and evenly and with little noise. engaging the corrugations of the shutter, sub- What I claim as new, anddesire to secure stantially as above described. by Letters Patent, is-

In -testimony that I claim the foregoing I 1. The com binati0n,with the metallic shutter have hereunto set my hand and seal this 18th composed of a continuous sheet of corrugated day of July, A. D. 1876.

metal, of the elastic bands extending length- JAS. G. WILSON. [L. s.] wise along the shutter, and connected there- Witnesses: with by fastening-rivets passing through slots, W. HAUFF,

substantially as described. CHAS. WAHLERS. 

